Heating control system of multi-drum washing machine

ABSTRACT

A multi-drum washing machine comprises at least two sets of heating devices, and at least two detection units which are correspondingly connected with the heating devices. Each detection unit is used for detecting heating information of the corresponding heating device and controlling at least one other heating device to be turned on/off according to the heating information. The heating control system of the multi-drum washing machine solves the problem that it is difficult to detect heating devices in a multi-drum washing machine, thus increasing the calculation burden of a processor. The disclosure realizes real-time detection of the heating devices through simple detection circuit hardware connection on a circuit of each heating device. The circuits are detected by using connection structures of circuit hardware, thereby saving cost, improving the sensitivity of the detection circuits and prolonging the service life of the processor of the multi-drum washing machine.

TECHNICAL FIELD

The disclosure relates to a multi-drum washing machine, in particular toa heating control system of a multi-drum washing machine.

BACKGROUND

With the improvement of living quality, people become increasingly awareof the importance of hygiene, especially in the aspect of householdlaundry washing, more and more people wash clothes separately now. Forexample, undergarments and outer garments are washed separately, babyclothing and adult clothing are washed separately, clothes withdifferent colors are washed separately, or small-load washing isrequired when only a few items of clothing need to be washed. These canbe done only in batches using an existing washing machine, or multiplewashing machines are needed to meet the above requirements. This willnot only waste a lot of energy and water, but also occupies large space.A multi-drum washing machine can meet the above needs and solve theproblem of large space occupation. However, since each drum is usuallyequipped with one or two heating pipes, electric potential safetyhazards might be caused when improper control is conducted.

Chinese patent application number of CN201010237876.X discloses acombined washer/dryer system and a control method thereof. The combinedwasher/dryer system comprises a washer and a dryer. The control methodcomprises the following steps of: electrically connecting the washer andthe dryer, switching on the power supply to start working, detecting theworking current of the system through a power management module, andcontrolling the working current of a heating pipe of the washer or aheating pipe of the dryer according to the working current of the systemso as to control the working current within a safe current range. Inthis way, the use safety of the system is improved. The implementationprinciple of the control method is simple and the program is easy tocontrol. However, since the power management module is added to controlthe working current within a safe range, the cost of the whole machineis increased; furthermore, if a detection circuit of the powermanagement module fails, there is a electric potential safety hazardthat both heating pipes work with large currents.

In view of this, the present disclosure is proposed.

SUMMARY

The technical problem to be solved by the disclosure is to overcome thedefects of the prior art, and provide a heating control system of amulti-drum washing machine. A simple circuit detection unit is arrangedon a circuit of a heating device to realize the detection of the heatingdevice, obtain heating information and then control the heating device,thereby improving the operation safety of the multi-drum washingmachine.

In order to achieve the purpose, the disclosure adopts the followingtechnical scheme: a heating control system of a multi-drum washingmachine is provided, the multi-drum washing machine comprises at leasttwo sets of heating devices, and the heating control system furthercomprises at least two detection units which are correspondinglyconnected with the heating devices, wherein each detection unit is usedfor detecting heating information of one of the heating devices and atleast one other heating device is controlled to be turned on/offaccording to the heating information.

Further, a first detection unit, corresponding to a first heatingdevice, in the control system detects heating information of the firstheating device, and a second heating device is controlled to be turnedon/off according to the heating information of the first heating device;

wherein the first heating device and the second heating device arearranged in parallel.

Further, each heating device comprises at least one heating unit and acontrol unit corresponding to the heating unit, one end of the heatingunit is connected with a first power supply, the other end of theheating unit is connected with the control unit, and the other end ofthe control unit is connected with a second power supply;

wherein the control unit is used for controlling the heating unit to beturned on/off.

Further, each detection unit is arranged in parallel with thecorresponding control unit and is used for detecting electric potentialinformation of at least one end of the control unit.

Further, each heating unit comprises one or any combination of a heatingpipe, a heating wire, a heating rod and an electromagnetic inductionheating ring;

preferably, the heating unit is a heating pipe.

Further, each detection unit is a first detection circuit, and an inputend of the first detection circuit is arranged between and connected tothe corresponding heating unit and the corresponding control unit.

Further, a connecting relation of each first detection circuit is asfollows: one end of a first resistor R is connected with the input end,the other end of the first resistor R is connected with an output endand a capacitor C, and the other end of the capacitor C is grounded.

Further, each detection unit is a second detection circuit, and thesecond detection circuit is connected in parallel with the correspondingcontrol unit;

wherein one end of the second detection circuit is arranged between thecorresponding heating unit and the corresponding control unit, and theother end of the second detection circuit is arranged between thecorresponding control unit and the second power supply and forms aclosed loop with the corresponding control unit.

Further, a connecting relation of each second detection circuit is asfollows: the second detection circuit comprises a second resistor R1 anda diode D, and the resistor R1 is connected to the diode D and forms aclosed loop with the corresponding control unit; and the seconddetection circuit further comprises an optical coupler OC, the opticalcoupler OC is reversely connected with the diode D, a C pole of theoptical coupler OC is connected with a third resistor R3 and an externalpower supply V+, and an E pole of the optical coupler OC is grounded.

Further, each control unit comprises a knife switch and/or a relayswitch.

After the technical scheme is adopted, compared with the prior art, thedisclosure has the following beneficial effects:

1. The heating control system of the multi-drum washing machine providedby the disclosure solves the problem that it is difficult to detectheating devices in a multi-drum washing machine, thus increasing thecalculation burden of a processor. The disclosure realizes real-timedetection of the heating devices through simple detection circuithardware connection on a circuit of each heating device, thus reducingthe calculation burden of the processor of the multi-drum washingmachine; and according to the disclosure, the circuits are detected byusing connection structures of circuit hardware, thereby saving cost,reducing the data processing amount of the multi-drum washing machineand prolonging the service life of the processor of the multi-drumwashing machine.

2. The detection circuits adopted by the heating control system of themulti-drum washing machine are simple in structure and sensitive inresponse, and besides, the heating control system of the multi-drumwashing machine has better safety and is suitable for production andpopularization.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a heating control system of amulti-drum washing machine according to an embodiment of the presentdisclosure;

FIG. 2 is a structural diagram of a detection unit according to anembodiment of the present disclosure; and

FIG. 3 is a structural diagram of a detection unit according to anotherembodiment of the present disclosure.

1. heating unit; 2. control unit; 3. first detection circuit; 4. seconddetection circuit.

DETAILED DESCRIPTION OF THE EMBODIMENTS

For better understanding of the above objects, features and advantagesof the present disclosure, the present disclosure will be described infurther detail below with reference to the accompanying drawings anddetailed description.

Embodiment 1

As shown in FIG. 1-FIG. 3, a heating control system of a multi-drumwashing machine is provided, the multi-drum washing machine comprises atleast two sets of heating devices, and the heating control systemfurther comprises at least two detection units which are correspondinglyconnected with the heating devices, wherein each detection unit is usedfor detecting heating information of the corresponding heating deviceand controlling at least one other heating device to be turned on/offaccording to the heating information.

Specifically, the multi-drum washing machine described in thisembodiment can acquire the heating information of the heating devices byrespectively detecting the heating devices, and control the operation ofthe heating devices according to the heating information, so as to avoidpotential safety hazards of the multi-drum washing machine caused byexcessive power consumption when the plurality of heating devices run atthe same time. In this embodiment, when the heating devices work, thedetection units are triggered to generate a high level or a low level;and when the heating devices do not work, the detection units aretriggered to generate a low level or a high level. The embodimentrealizes real-time detection of the heating devices through simpledetection circuit hardware connection on a circuit of each heatingdevice, thus reducing the calculation burden of the processor of themulti-drum washing machine; and according to this embodiment, thecircuits are detected by using connection structures of circuithardware, thereby simplifying the judging and processing of theprocessor so that the accuracy and sensitivity of the detection circuitsare improved, reducing the data processing amount of the multi-drumwashing machine and prolonging the service life of the processor of themulti-drum washing machine.

Besides, no extra power management module needs to be added, only thedetection units consisting of the simple circuits need to be added inthe heating devices to perform detection control on the plurality ofsets of heating devices, thereby saving the cost of the multi-drumwashing machine, increasing safety and making the heating control systembe suitable for production and popularization.

Further, a first detection unit, corresponding to a first heatingdevice, in the control system detects heating information of the firstheating device, and controls a second heating device to be turned on/offaccording to the heating information of the first heating device;

wherein the first heating device and the second heating device arearranged in parallel.

Specifically, the heating devices in this embodiment are correspondinglyconnected with the detection units. Before the second heating device isturned on, the first heating device needs to be detected to ensure thatthe first heating device is not in a high-power working state, so thatit is ensured that the high-power heating devices in the multi-drumwashing machine do not operate at the same time and that the multi-drumwashing machine runs safely.

Further, each heating device comprises at least one heating unit 1 and acontrol unit 2 corresponding to the heating unit 1, one end of theheating unit 1 is connected with a first power supply, the other end ofthe heating unit 1 is connected with the control unit 2, and the otherend of the control unit 2 is connected with a second power supply;

wherein the control unit 2 is used for controlling the heating unit 1 tobe turned on/off.

When one heating device is provided with a plurality of heating units 1,the heating units are arranged in parallel.

Specifically, in this embodiment, each heating unit 1 and thecorresponding control unit 2 are connected in series to form one heatingdevice, and a plurality of heating devices are connected in parallel toform a heating system of the multi-drum washing machine. For example, afirst heating unit is connected in series with a first control unit, andthe first control unit has an on state and an off state, and controlsthe heating unit 1 to perform heating and not to perform heating by thetwo states.

Meanwhile, the first detection unit also corresponds to the firstcontrol unit and the first heating unit, and the first detection unitdetects the electric potential information on a circuit where the firstheating unit and the first control unit are located, thereby obtaining aheating state of the heating unit 1.

Further, each detection unit is arranged in parallel with thecorresponding control unit 2 and is used for detecting electricpotential information of at least one end of the control unit 2.

Further, each heating unit 1 comprises one or any combination of aheating pipe, a heating wire, a heating rod and an electromagneticinduction heating ring;

preferably, the heating unit 1 is a heating pipe.

Further, each detection unit is a first detection circuit 3, and aninput end of the first detection circuit 3 is arranged between andconnected with the corresponding heating unit 1 and the correspondingcontrol unit 2.

Further, a connecting relation of each first detection circuit 3 is asfollows: one end of a first resistor R is connected with the input end,the other end of the first resistor R is connected with an output endand a capacitor C, and the other end of the capacitor C is grounded.

Specifically, in this embodiment, each detection circuit is anon-isolated detection circuit, and the heating information of theheating unit 1 can be detected simply by acquiring a signal of a linebetween the heating unit 1 and the control unit 2. When the control unit2 is on or off, the input end of the detection unit inputs an electricalsignal, thereby triggering the capacitor C to discharge or charge, andthe output end outputs a high level or a low level. The state of eachcontrol unit 2 is obtained, and then the on/off state of other controlunits 2 is controlled.

For example, when the first power supply is higher than the second powersupply and the control unit 2 is on, the capacitor C is triggered todischarge, and the output end outputs a low level. When the control unit2 is off, the capacitor C is triggered to charge, and the output endoutputs a high level.

In this embodiment, through the charging and discharging process of thehardware capacitor C, the on/off state of the control unit 2 isobtained, so that other heating units 1 are controlled to be turnedon/off according to the on/off state of the control unit 2. According tothe embodiment, the heating information of the heating units 1 isdetected through a simple hardware connection structure, so that thecontrol of the heating system is realized, the calculation burden of theprocessor of the multi-drum washing machine is reduced, and electricpotential safety hazards caused when the plurality of heating deviceswork at the same time with large currents due to calculation failurecaused by heavy calculation burden of the processor are avoided.

Further, each control unit 2 comprises a knife switch and/or a relayswitch.

To sum up, the heating control system of the multi-drum washing machinein this embodiment has the following advantages:

1. The heating control system of the multi-drum washing machine providedin this embodiment solves the problem that it is difficult to detectheating devices in a multi-drum washing machine, thus increasing thecalculation burden of a processor; the embodiment realizes real-timedetection of the heating devices through simple detection circuithardware connection on a circuit of each heating device, thus reducingthe calculation burden of the processor of the multi-drum washingmachine; and according to the embodiment, the circuits are detected byusing connection structures of circuit hardware, thereby saving cost,reducing the data processing amount of the multi-drum washing machineand prolonging the service life of the processor of the multi-drumwashing machine.

2. The detection circuits adopted by the heating control system of themulti-drum washing machine are simple in structure and sensitive inresponse, and besides, the heating control system of the multi-drumwashing machine has better safety and is suitable for production andpopularization.

Embodiment 2

As shown in FIG. 1 and FIG. 3, a heating control system of a multi-drumwashing machine is provided, the multi-drum washing machine comprises atleast two sets of heating devices, and the heating control systemfurther comprises at least two detection units which are correspondinglyconnected with the heating devices, wherein each detection unit is usedfor detecting heating information of the corresponding heating deviceand controlling the heating devices to be turned on/off according to theheating information.

Further, one detection unit in the control system detects heatinginformation of a first heating device, and controls a second heatingdevice to be turned on/off according to the heating information of thefirst heating device.

Further, each heating device comprises at least one heating unit 1 and acontrol unit 2 corresponding to the heating unit 1, one end of theheating unit 1 is connected with a first power supply, the other end ofthe heating unit 1 is connected with the control unit 2, and the otherend of the control unit 2 is connected with a second power supply;

wherein the control unit 2 is used for controlling the heating unit 1 tobe turned on/off.

Further, each detection unit is arranged in parallel with thecorresponding control unit 2 and is used for detecting electricpotential information of at least one end of the control unit 2.

Further, each heating unit 1 comprises one or any combination of aheating pipe, a heating wire, a heating rod and an electromagneticinduction heating ring;

preferably, the heating unit 1 is a heating pipe.

Each detection unit is a second detection circuit 4, and the seconddetection circuit 4 is connected in parallel with the correspondingcontrol unit 2;

wherein one end of the second detection circuit 4 is arranged betweenthe corresponding heating unit 1 and the corresponding control unit 2,and the other end of the second detection circuit 4 is arranged betweenthe corresponding control unit 2 and the second power supply; and thesecond detection circuit and the corresponding control unit 2 form aclosed loop.

Further, a connecting relation of each second detection circuit 4 is asfollows: the second detection circuit comprises a second resistor R1 anda diode D, and the resistor R1 and the diode D are connected and form aclosed loop with the corresponding control unit 2; and the seconddetection circuit 4 further comprises an optical coupler OC, the opticalcoupler OC is reversely connected with the diode D, a C pole of theoptical coupler OC is connected with a third resistor R3 and an externalpower supply V+, and an E pole of the optical coupler OC is grounded.

Specifically, in this embodiment, the isolated detection circuits aremainly adopted, which can avoid the problem of detection errors indetection information of the detection units due to the interference ofa circuit where the heating units 1 and the control units 2 are located.In each second detection circuit 4 of this embodiment, the detectionunit is connected in parallel with the control unit 2 to detect thecircuit information of two ends of the control unit 2, and when thecontrol unit 2 is on or off, an output end outputs a high level or a lowlevel. The state of each control unit 2 is obtained, and then the on/offstate of other control units 2 is controlled.

Meanwhile, according to each second detection circuit 4 in thisembodiment, through reverse connection of the diode D and the opticalcoupler OC, specifically, through reverse parallel connection of thediode D and a light emitting diode in the optical coupler OC, the safetyof the second detection circuit 4 is improved.

Moreover, when the first power supply is higher than the second powersupply and the control unit 2 is on, the light emitting diode in theoptical coupler OC is triggered to emit light, a loop of the secondresistor R1 and the light emitting diode is formed, and a C pole and anE pole of a triode are turned on, so that the output end outputs a highlevel;

and when the control unit 2 is off, the diode D is turned on, forming aloop of the second resistor R1 and the diode D. The C pole and the Epole of the triode of the optical coupler OC are not turned on, and thenthe output end outputs a low level.

In this embodiment, the second detection circuits 4 can not only detectthe circuits of the heating devices, but also protect the detectioncircuits and improve the operation safety of the multi-drum washingmachine.

Further, each control unit 2 comprises a knife switch and/or a relayswitch.

The above-mentioned embodiments can be further combined or replaced, andthe embodiments are merely preferred embodiments of the presentdisclosure, and do not limit the concept and scope of the presentdisclosure. Without departing from the design idea of the presentdisclosure, various changes and improvements made to the technicalscheme of the present disclosure by those skilled in the art belong tothe protection scope of the present disclosure.

1. A heating control system of a multi-drum washing machine having atleast two sets of heating devices, comprising, at least two detectionunits which are correspondingly connected with the heating devices,wherein one of the detection units is used for detecting heatinginformation of one of the heating device, and, at least one otherheating device is controlled to be turned on/off according to theheating information.
 2. The heating control system of the multi-drumwashing machine according to claim 1, wherein a first detection unit,corresponding to a first heating device, in the control system detectsheating information of the first heating device, and a second heatingdevice is controlled to be turned on/off according to the heatinginformation of the first heating device; wherein the first heatingdevice and the second heating device are arranged in parallel.
 3. Theheating control system of the multi-drum washing machine according toclaim 1, wherein each heating device comprises at least one heating unitand a control unit corresponding to the heating unit, one end of theheating unit is connected with a first power supply, another end of theheating unit is connected with one end of the control unit, and anotherend of the control unit is connected with a second power supply; whereinthe control unit is used for controlling the heating unit to be turnedon/off.
 4. The heating control system of the multi-drum washing machineaccording to claim 3, wherein the detection unit is arranged in parallelwith the control unit and is used for detecting electric potentialinformation of at least one end of the control unit.
 5. The heatingcontrol system of the multi-drum washing machine according to claim 3,wherein the heating unit comprises one or more than one element selectedfrom a group consisting of a heating pipe, a heating wire, a heating rodand an electromagnetic induction heating ring.
 6. The heating controlsystem of the multi-drum washing machine according to claim 3, whereinthe detection unit is a first detection circuit, and an input end of thefirst detection circuit is arranged between and connected with theheating unit and the control unit.
 7. The heating control system of themulti-drum washing machine according to claim 6, wherein a connectingrelation of the first detection circuit is as follows: one end of afirst resistor R is connected with the input end, another end of thefirst resistor R is connected with an output end and a capacitor C, andanother end of the capacitor C is grounded.
 8. The heating controlsystem of the multi-drum washing machine according to claim 3, whereinthe detection unit is a second detection circuit, and the seconddetection circuit is connected in parallel with the control unit;wherein one end of the second detection circuit is arranged between theheating unit and the control unit, and another end of the seconddetection circuit is arranged between the control unit and the secondpower supply and, the second detection circuit and the correspondingcontrol unit form a closed loop.
 9. The heating control system of themulti-drum washing machine according to claim 8, wherein a connectingrelation of the second detection circuit is as follows: the seconddetection circuit comprises a second resistor R1 and a diode D, theresistor R1 and the diode D are connected and form a closed loop withthe control unit; the second detection circuit further comprises anoptical coupler OC, the optical coupler OC is reversely connected withthe diode D, a C pole of the optical coupler OC is connected with athird resistor R3 and an external power supply V+, and an E pole of theoptical coupler OC is grounded.
 10. The heating control system of themulti-drum washing machine according to claim 3, wherein the controlunit comprises a knife switch and/or a relay switch.
 11. The heatingcontrol system of the multi-drum washing machine according to claim 2,wherein each heating device comprises at least one heating unit and acontrol unit corresponding to the heating unit, one end of the heatingunit is connected with a first power supply, another end of the heatingunit is connected with one end of the control unit, and another end ofthe control unit is connected with a second power supply; wherein thecontrol unit is used for controlling the heating unit to be turnedon/off.
 12. The heating control system of the multi-drum washing machineaccording to claim 5, wherein the heating unit is a heating pipe. 13.The heating control system of the multi-drum washing machine accordingto claim 4, wherein the heating unit comprises one or more than oneelement selected from a group consisting of a heating pipe, a heatingwire, a heating rod and an electromagnetic induction heating ring. 14.The heating control system of the multi-drum washing machine accordingto claim 4, wherein the detection unit is a first detection circuit, andan input end of the first detection circuit is arranged between andconnected with the heating unit and the control unit.
 15. The heatingcontrol system of the multi-drum washing machine according to claim 5,wherein the detection unit is a first detection circuit, and an inputend of the first detection circuit is arranged between and connectedwith the heating unit and the control unit.
 16. The heating controlsystem of the multi-drum washing machine according to claim 4, whereinthe detection unit is a second detection circuit, and the seconddetection circuit is connected in parallel with the control unit;wherein one end of the second detection circuit is arranged between theheating unit and the control unit, and another end of the seconddetection circuit is arranged between the control unit and the secondpower supply and, the second detection circuit and the correspondingcontrol unit form a closed loop.
 17. The heating control system of themulti-drum washing machine according to claim 5, wherein the detectionunit is a second detection circuit, and the second detection circuit isconnected in parallel with the control unit; wherein one end of thesecond detection circuit is arranged between the heating unit and thecontrol unit, and another end of the second detection circuit isarranged between the control unit and the second power supply and, thesecond detection circuit and the corresponding control unit form aclosed loop.